Need expert help—fast? Use the Help Bell for personalized assistance getting answers to your important questions.
Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.
Have a better answer? Share it in a comment.
Another addin or program may be interfering with Outlook.
1. Google toolbar or Yahoo toolbar sometimes interfere with Outlook. Disable them and test.
2. Register an important Outlook file. Go to Start > Run and type regsvr32 OLE32.DLL
Do the same for INETCOMM.DLL
3. Disable Outlook Addins. Go to Tools > Options > Other > Advanced Options > Addin Manager or COMM/Addins and disable the addins.
4. Start Outlook in Safe Mode. Go to Start > Run and type
"c:\Program Files\Microsoft Office\Office\Outlook.exe"
Your path to Outlook.exe may be a little different.
5. Create a new Outlook profile.
http://www.outlook-tips.net/howto/profile.htm
6. Repair Outlook. With Outlook open, go to Help > Detect and Repair.
7. If no joy, reinstall Outlook. Go to Add/Remove Programs and highlight Microsoft Office. Click on Install/Uninstall. A menu will pop allowing you to choose repair or reinstall.
http://support.microsoft.com/?kbid=291614
Best wishes!